/* ==========================================================================
   ApexCloud - Modern CSS Design System
   ========================================================================== */

/* 1. CSS Custom Properties / Design Tokens */
:root {
    /* Color Palette (Dark Theme Default) */
    --bg-dark: #07090E;
    --bg-card: rgba(18, 24, 38, 0.65);
    --bg-card-hover: rgba(28, 36, 56, 0.85);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(0, 242, 254, 0.3);
    
    --text-main: #F1F5F9;
    --text-muted: #94A3B8;
    --text-heading: #FFFFFF;
    
    /* Primary Accent Gradients (v2.0 Vibrant Emerald Theme) */
    --primary-cyan: #00FF9D;
    --primary-purple: #00E5FF;
    --accent-pink: #FFB800;
    --gradient-primary: linear-gradient(135deg, #00FF9D 0%, #00E5FF 100%);
    --gradient-accent: linear-gradient(135deg, #FFB800 0%, #FF5E00 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0, 255, 157, 0.4) 0%, rgba(0, 229, 255, 0.4) 100%);
    --shadow-glow: 0 0 35px rgba(0, 255, 157, 0.3);
    
    /* Status Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;

    /* Fonts & Spacing */
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-code: 'JetBrains Mono', monospace;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Dynamic Shadows */
    --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 35px rgba(0, 242, 254, 0.25);
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-dark: #F8FAFC;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(241, 245, 249, 0.95);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-highlight: rgba(0, 150, 255, 0.4);
    
    --text-main: #1E293B;
    --text-muted: #64748B;
    --text-heading: #0F172A;
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
}

/* 2. Global Resets & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.4s ease, color 0.4s ease;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

/* 3. Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.max-width-md {
    max-width: 800px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.glass-card:hover {
    border-color: var(--border-highlight);
}

/* Background Blobs */
.bg-blur {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.5;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: #00FF9D;
    top: -100px;
    left: -150px;
}

.blob-2 {
    width: 600px;
    height: 600px;
    background: #FFB800;
    top: 40%;
    right: -200px;
}

/* 4. Buttons & Badges */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
}

.btn-full {
    width: 100%;
}

.glow-btn {
    position: relative;
    z-index: 1;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary-cyan);
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary-cyan);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: 0.5; }
}

/* 5. Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 0.75rem 0;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.5rem;
    font-weight: 800;

}

.logo-icon {
    width: 38px;
    height: 38px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.nav-link:hover {
    color: var(--primary-cyan);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
}

.hamburger {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

/* 6. Hero Section */
.hero-section {
    padding: 11rem 0 6rem;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    color: var(--text-heading);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 540px;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-trust {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.trust-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

.trust-logos {
    display: flex;
    gap: 1.5rem;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.hero-image-card {
    padding: 10px;
    overflow: hidden;
    position: relative;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    display: block;
}

.floating-badge {
    position: absolute;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.2rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: var(--shadow-card);
    animation: float 4s ease-in-out infinite;
}

.badge-top-right {
    top: -20px;
    right: -10px;
}

.badge-bottom-left {
    bottom: -20px;
    left: -10px;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* 7. Stats Section */
.stats-section {
    padding: 2rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 2.5rem;
    text-align: center;
    gap: 2rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-heading);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

/* 8. Live Terminal Demo */
.demo-section {
    padding: 6rem 0;
}

.section-header {
    margin-bottom: 3.5rem;
}

.section-header.center {
    text-align: center;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 0.8rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.terminal-wrapper {
    background: #0B0E17;
    border-radius: var(--radius-md);
    overflow: hidden;
    max-width: 850px;
    margin: 0 auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.terminal-header {
    background: #151A28;
    padding: 0.8rem 1.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.terminal-buttons {
    display: flex;
    gap: 6px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27C93F; }

.terminal-title {
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.copy-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.3rem 0.7rem;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    color: var(--primary-cyan);
    border-color: var(--primary-cyan);
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-code);
    font-size: 0.9rem;
    line-height: 1.8;
}

.prompt { color: var(--primary-cyan); }
.command { color: #FFF; font-weight: 600; }
.text-muted { color: var(--text-muted); }
.text-info { color: #38BDF8; }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-highlight { color: var(--primary-cyan); font-weight: 600; }

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* 9. Features Section */
.features-section {
    padding: 6rem 0;
}

.feature-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.6rem 1.4rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
    background: var(--gradient-primary);
    color: #000;
    border-color: transparent;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
}

.glow-cyan { background: rgba(0, 242, 254, 0.1); color: var(--primary-cyan); }
.glow-purple { background: rgba(79, 172, 254, 0.1); color: var(--primary-purple); }
.glow-pink { background: rgba(255, 8, 68, 0.1); color: var(--accent-pink); }

.feature-card h3 {
    font-size: 1.25rem;
    color: var(--text-heading);
    margin-bottom: 0.6rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* 10. Architecture Workflow */
.architecture-section {
    padding: 6rem 0;
}

.workflow-grid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.workflow-card {
    flex: 1;
    padding: 2rem;
    position: relative;
}

.step-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-cyan);
    opacity: 0.6;
    margin-bottom: 0.5rem;
}

.workflow-card h3 {
    margin-bottom: 0.6rem;
    color: var(--text-heading);
}

.workflow-connector {
    color: var(--text-muted);
    font-size: 1.5rem;
}

/* 11. Pricing Section */
.pricing-section {
    padding: 6rem 0;
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    font-weight: 600;
}

.discount-tag {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
}

/* Switch Toggle */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider { background: var(--gradient-primary); }
input:checked + .slider:before { transform: translateX(24px); }
.slider.round { border-radius: 34px; }
.slider.round:before { border-radius: 50%; }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3.5rem;
}

.pricing-card {
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
}

.pricing-card.popular {
    border-color: var(--primary-cyan);
    box-shadow: var(--shadow-glow);
}

.popular-tag {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: #000;
    padding: 0.2rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.plan-header h3 {
    font-size: 1.4rem;
    color: var(--text-heading);
}

.plan-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.plan-price {
    margin: 1.5rem 0;
}

.currency {
    font-size: 1.5rem;
    font-weight: 700;
    vertical-align: top;
}

.amount {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--text-heading);
}

.period {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
    flex: 1;
}

.plan-features li {
    padding: 0.6rem 0;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.plan-features li.disabled {
    color: var(--text-muted);
    opacity: 0.5;
}

/* 12. Accordion FAQ */
.faq-section {
    padding: 6rem 0;
}

.accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-heading);
    font-size: 1.05rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    text-align: left;
}

.accordion-header i {
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-header i {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.5rem;
    color: var(--text-muted);
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.accordion-item.active .accordion-content {
    max-height: 200px;
    padding-bottom: 1.25rem;
}

/* 13. CTA Section */
.cta-section {
    padding: 6rem 0;
}

.cta-card {
    padding: 4rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.08) 0%, rgba(79, 172, 254, 0.08) 100%);
    border-color: rgba(0, 242, 254, 0.2);
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 1rem;
}

.cta-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* 14. Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 5rem 0 2rem;
    background: #05070A;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
    max-width: 300px;
}

.footer-links h4 {
    color: var(--text-heading);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.6rem;
}

.footer-links a:hover {
    color: var(--primary-cyan);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    background: var(--gradient-primary);
    color: #000;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* 15. Modal & Toast */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-card {
    width: 100%;
    max-width: 480px;
    padding: 2.5rem;
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.4rem;
    color: var(--text-heading);
}

.modal-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    font-family: var(--font-main);
    outline: none;
    transition: var(--transition);
}

.form-input:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #151C2C;
    border: 1px solid var(--primary-cyan);
    border-radius: var(--radius-sm);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: var(--shadow-card);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 3000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-subtitle { margin: 0 auto 2rem; }
    .hero-cta-group { justify-content: center; }
    .trust-logos { justify-content: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .workflow-grid { flex-direction: column; }
    .workflow-connector { transform: rotate(90deg); margin: 0.5rem 0; }
    .footer-container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .hero-title { font-size: 2.2rem; }
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-dark);
        flex-direction: column;
        padding: 2rem;
        transition: 0.3s ease;
    }
    .nav-links.active { left: 0; }
    .hamburger { display: block; }
    .nav-btn { display: none; }
}